revelative
/ˈrɛvələtɪv/ /rɛv(ə)lətɪv/adjective
Serving to reveal something, especially significant information; revelatory; demonstrative of something.
Origin
Mid 19th century; earliest use found in Chambers's Papers for People. From classical Latin revēlāt-, past participial stem of revēlāre reveal + -ive. Compare post-classical Latin revelativus.